test raster tile mb style doc

style.json

{
    "layers": [
        {
            "id": "simple-tiles",
            "maxzoom": 22,
            "minzoom": 0,
            "source": "simple-tiles",
            "type": "raster"
        }
    ],
    "sources": {
        "simple-tiles": {
            "tileSize": 256,
            "tiles": [
                "https://a.tile.openstreetmap.org/{z}/{x}/{y}.png",
                "https://b.tile.openstreetmap.org/{z}/{x}/{y}.png"
            ],
            "type": "raster"
        }
    },
    "version": 8
}